Is it true that the the hotter a substance is the less energy its molecules have?

Is it true that the hotter a substance is the less energy its molecules have?

No.

What happens to the molecules in a substance when thermal energy is removed?

When thermal energy is removed from a substance, the molecules lose kinetic energy and slow down. This often causes the substance to cool down as the molecules have less energy to move and vibrate. In extreme cases, the substance may undergo a phase change, such as from a liquid to a solid.

Does it take less energy to heat hotter water than colder water?

Yes, as the molecules of the hot water are already in motion, they need less energy to speed up and transfer it whereas the molecules of cold water need far more energy so that they get into motion and then transfer energy.

If something has a low specific heat does it need more or less energy to get hotter?

Something with a low specific heat requires less energy to get hotter because it can heat up more quickly compared to something with a high specific heat. Specific heat is the amount of energy needed to raise the temperature of a given mass of a substance by one degree Celsius.

Particles in a liquid have less energy than particles in a. water b. a computer c. ice d. a gas?

In terms of kinectic energy molecules in soilid will have least energy. Molecules in lquid have less energy than in gases. Molecules in gaseous state have maximum energy. Entropy of a substance increases from solid to liquid to gas.

How is temperature related to the energy of molecules?

Temperature is a measure of the average kinetic energy of molecules in a substance. As temperature increases, molecules move faster and have more energy. Conversely, as temperature decreases, molecules move slower and have less energy.

Is blue light or red light hotter?

Red light is hotter than blue light. This is because red light has a longer wavelength and lower frequency compared to blue light, meaning it carries less energy. Temperature is related to the average kinetic energy of particles in a substance, and red light has less energy to transfer compared to blue light.

What does a substance do when it is cooled?

When a substance is cooled, its molecules slow down and have less energy, causing them to move closer together. This often results in the substance contracting or becoming more dense. In some cases, cooling a substance may also lead to a change in state, such as from a gas to a liquid or from a liquid to a solid.

What do molecules do when heat is transferred by conduction?

When heat is transferred by conduction, molecules in a substance or material interact in a specific way to transfer thermal energy from a region of higher temperature to a region of lower temperature. Here's what happens at the molecular level during heat conduction: **Vibration and Kinetic Energy:** In a substance, molecules are constantly in motion due to their thermal energy, which is often referred to as kinetic energy. They vibrate, rotate, and move randomly. **Hotter to Cooler:** When two regions of the substance are at different temperatures, such as a hotter region in contact with a cooler region, the molecules in the hotter region have higher kinetic energy compared to those in the cooler region. **Collision and Energy Transfer:** Molecules with higher kinetic energy in the hotter region collide with neighboring molecules. During these collisions, they transfer some of their kinetic energy to the cooler, less energetic molecules. This transfer of energy occurs through direct interactions between neighboring molecules. **Equilibrium:** Over time, as more collisions and interactions take place, the kinetic energy is transferred from the hotter region to the cooler region. This continues until thermal equilibrium is reached, where the temperatures of both regions become equal, and there is no net heat flow between them. Conduction is most effective in materials that are good conductors, such as metals, as they have highly mobile electrons that can facilitate the transfer of kinetic energy. Insulators, on the other hand, do not conduct heat as effectively because their molecules are less mobile and have fewer free electrons. In summary, during heat conduction, the molecules in a substance transfer kinetic energy from faster-moving, hotter molecules to slower-moving, cooler molecules through direct collisions, leading to a flow of thermal energy from the hot region to the cold region until thermal equilibrium is reached.

Can thermal energy be cool when its hot?

Yes. But a cooler body has less energy than a hotter object

What will happen to the atoms or molecules of a substance when it condenses?

When a substance condenses, it turns from a vapor (gas) into a liquid. When this occurs, the atoms/molecules lose some kinetic energy, and don't move as fast. They also become packed closer together, and take up less volume.

Why do substances contract when they cool?

As substances cool, the molecules slow down and have less kinetic energy, causing them to come closer together. This decrease in distance between molecules results in a contraction of the substance.